Search found 57 matches

by themelon
Aug 09 2018 10:45pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1095
Views: 88598

Re: bluetooth BMS?

I like that idea! Tap into the control lines for each cell and then pass those signals over to a parallel running board that can handle some significant amperage. There would need to be a custom made board for this that uses large resistors and larger SMT transistors, but it would not be hard to de...
by themelon
Aug 09 2018 2:52pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1095
Views: 88598

Re: bluetooth BMS?

I like that idea! Tap into the control lines for each cell and then pass those signals over to a parallel running board that can handle some significant amperage. There would need to be a custom made board for this that uses large resistors and larger SMT transistors, but it would not be hard to de...
by themelon
Jul 18 2018 4:24am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1095
Views: 88598

Re: 7S smart BMS

This is what 46 7S boards looks like...arrived today. I could use 4 boxes like that... These BMS are quite small. 4 boxes would be like 2000 of them. Not full boxes, just the quantity contained within it. I should have been more specific. I have 84 12s and 24 6s Volt modules that I may want to put ...
by themelon
Jul 17 2018 12:17pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1095
Views: 88598

Re: 7S smart BMS

ElectricGod wrote:
Jul 17 2018 12:11am
This is what 46 7S boards looks like...arrived today.
I could use 4 boxes like that...
by themelon
Jul 17 2018 2:07am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1095
Views: 88598

Re: 20-30S 80A smart BMS

This BMS is just the big brother to the smaller BMS that we have seen so much of in this thread. And when I say big brother, I really mean it! This thing is BIG, but it's also capable of 20-30S and from the factory good for 80 amps. However, everything about it says that 80 amps is just for starter...
by themelon
Jul 17 2018 12:50am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1095
Views: 88598

Re: bluetooth BMS?

thermal conductive pad usually gets the good stuff. sillicone is not good for heat transfer. True, as i use sillicone hot pads to pull stuff from the oven. I don't think any of the stuff I have ever bought that was labeled as such actually had sillicone in it as it has always worked just fine. Not ...
by themelon
Jul 16 2018 8:52pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1095
Views: 88598

Re: 20-30S 80A smart BMS

ElectricGod wrote:
Dec 31 1969 7:25pm

Does anybody know what you call this rubbery heat sink tape stuff? I'd like to order a roll of it if I knew what it was called
"Silicone thermal pad" will lead you to it
by themelon
Jul 16 2018 12:57am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1095
Views: 88598

Re: bluetooth BMS?

Also how long should it take to balance ? so it does 50ma balance current but it pulses this every 5 seconds. I have a 10ah 36v battery I am trying to balance, left it over night and it barely changed ? the difference is only around 200millivolts ? i.e max cell was 3.998 and the weakest was 3.789v ...
by themelon
Jul 15 2018 9:34pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1095
Views: 88598

Re: bluetooth BMS?

7S to 112S BMS/balancer with LCD: (LIPO, LION, LIFE, LTO) https://www.aliexpress.com/store/product/112S-35S-Lithium-Li-ion-LiFePO4-LTO-Lipo-Battery-Protection-Board-BMS-Balance-Bluetooth-APP-7S/2856009_32861093603.html?spm=2114.12010612.8148356.42.7d9b3de2Pn5Msg Did you happen to look at the unpopu...
by themelon
Jul 03 2018 11:53am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S (now 32S)- Seeking the Ultimate Commuter Battery
Replies: 168
Views: 20356

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

I haven't figured out how to program this yet, but it will handle LTO, LIFE or LION/LIPO. This is 5 boards or 35S stack. You can stack them 16 tall or 112S. I think realistically they will balance at about .5 amps despite the sales page and docs saying "up to 1.2 amps". Obviously, this in LIPO. By ...
by themelon
Jul 03 2018 11:39am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S (now 32S)- Seeking the Ultimate Commuter Battery
Replies: 168
Views: 20356

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

The biggest problem I have is I need to make this easy to use from a battery connection and recharging standpoint so no one has the excuse that it is too complicated to use and shirk their mowing responsibilities. I have new found appreciation for all the work the power tool companies put in to mak...
by themelon
May 08 2018 6:44pm
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S (now 32S)- Seeking the Ultimate Commuter Battery
Replies: 168
Views: 20356

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Isn't "regen discharge" an axymoron? Regen puts current back into the battery and discharge takes it out. The idea is sound. Use SLA's as a storage device for the charge in your LTO's and they also act as the load for the LTO's Waiting on balance leads to arrive and then I can start messing with th...
by themelon
May 07 2018 10:40am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S (now 32S)- Seeking the Ultimate Commuter Battery
Replies: 168
Views: 20356

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Something that's banging around in the back of my mind is making my own balancing board. It doesn't need to be overly "intelligent" or complex. All I really need is reliable balancing that can work at a decent current level. However before I put any time into that, I have a few more LTO capable boa...
by themelon
May 02 2018 5:07pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1095
Views: 88598

Re: bluetooth BMS?

Should have put in a link. It is one of the modular alternatives I linked a few pages back. https://www.aliexpress.com/item/112S-35S-Lithium-Li-ion-LiFePO4-LTO-Lipo-Battery-Protection-Board-BMS-Balance-Bluetooth-APP-7S/32861093603.html From what I have been able to get from the vendor it uses the s...
by themelon
May 02 2018 12:02pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1095
Views: 88598

Re: bluetooth BMS?

He just canceled the order I made 2 weeks ago for 2 of these.... Got mine in but not smart enough to program them. 7s through 35s models. They seem to work. Seems I might still get them: hi friend our manufacturer said another set can be available after 10 days . so our warehouse staff is waiting a...
by themelon
May 02 2018 10:50am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1095
Views: 88598

Re: bluetooth BMS?

He just canceled the order I made 2 weeks ago for 2 of these.... Got mine in but not smart enough to program them. 7s through 35s models. They seem to work. Seems I might still get them: hi friend our manufacturer said another set can be available after 10 days . so our warehouse staff is waiting a...
by themelon
Apr 27 2018 12:42pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1095
Views: 88598

Re: bluetooth BMS?

Inwo wrote:
Apr 11 2018 9:40pm
By the way, Jason is working on a bms24t with 2 boards. For 48s.
Is he also planning on a charger to match?
by themelon
Apr 27 2018 11:43am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1095
Views: 88598

Re: bluetooth BMS?

They are both available. I ordered one with 11s balance modules up to over 100s. Canceled by seller. The first one you listed is no advantage over the 24s by model. The second seems bulky and expensive. Nice balance function though. I ordered these expadandable models. https://www.aliexpress.com/it...
by themelon
Apr 25 2018 2:22pm
Forum: Motor Technology
Topic: Buick Lacrosse 2012 e-assist moto-alternator
Replies: 153
Views: 18197

Re: Buick Lacrosse 2012 e-assist moto-alternator

Melon, I sent Paul a comment about your offer. If he accepts, I would gladly pay shipping. Thanks for your offer. Harold No worries on the shipping. I can take care of that. I'd be happy just to get one into more experienced hands who can expand on what e-vector has done. It's actually one reason I...
by themelon
Apr 25 2018 1:44pm
Forum: Motor Technology
Topic: Buick Lacrosse 2012 e-assist moto-alternator
Replies: 153
Views: 18197

Re: Buick Lacrosse 2012 e-assist moto-alternator

The Lebowski controller is BLDC. Been there and all but begged him to figure the code for the ACID. Paul Holmes has an ACID controller as a DIY or preassembled without the power section, I believe, and Johannes Huebner has another. Huebners needs the encoder board added. Holmes might have added cod...
by themelon
Apr 25 2018 12:46pm
Forum: Battery Technology
Topic: Power Tool Batteries in a Series
Replies: 3
Views: 432

Re: Power Tool Batteries in a Series

It is fine to do this, the batteries share the load, makita 36v tools use 2 18v batteries, DeWalt has a really funky setup in their FlexVolt batteries. Depending on what they are plugged into they are either 5S3P(20v6ah) or 15S1P(60v2ah). I have a miter saw that uses two of them at 60v in series fo...
by themelon
Apr 25 2018 12:32pm
Forum: Motor Technology
Topic: Buick Lacrosse 2012 e-assist moto-alternator
Replies: 153
Views: 18197

Re: Buick Lacrosse 2012 e-assist moto-alternator

You are correct, it's called BAS + (Belt Alternator Starter) system. In 2009 was the last year, then, 2012 was the new Gen 2 E-assist system. Melon, which do you have then, Gen 1 or Gen 2 ? I thought about getting a Gen 2 controller/inverter, but, they are located in 2-3 different areas of the cars...
by themelon
Apr 25 2018 8:39am
Forum: Motor Technology
Topic: Buick Lacrosse 2012 e-assist moto-alternator
Replies: 153
Views: 18197

Re: Buick Lacrosse 2012 e-assist moto-alternator

Harold in CR wrote:
Apr 25 2018 8:21am
The Gen 1 is a permanent magnet alternator operating on 36V. It was very weak compared to the Gen 2 at 115V.
And what is technically gen1 isn't called eAssist by GM.

In this case we should probably use model years as well to avoid confusion.
by themelon
Apr 24 2018 11:58am
Forum: Motor Technology
Topic: Buick Lacrosse 2012 e-assist moto-alternator
Replies: 153
Views: 18197

Re: Buick Lacrosse 2012 e-assist moto-alternator

So Im new to the electric motor setups and I've been wanting to do a electric boost system project for some time. I just bought a Gen 2 EAssist motor/Gen. I want to put it on my Miata as a boost system and the have a ReGen system. Most of the stuff you guys are talking about is way over my head, bu...
by themelon
Apr 21 2018 8:35am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 985
Views: 62499

Re: Tesla Model 3

I don't think the data backs up that statement. Tesla now has the cheapest to manufacture battery in the EV world. What data do you have to substantiate that statement.? Cost of the Powerwall. It has the lowest $/kwhr of any lithium based home power storage system. (And uses the same technology/ass...